Hello, I am developing a library called Stxxl. It is an implementation of STL for external memory (out-of-core) computations, i.e. Stxxl implements containers and algorithms that can process huge volumes of data that only fit on disks. Currently I have implemented vector, stack, and priority_queue. External memory map, list, and queue are coming soon. The containers take only specified (given) fixed amount of main memory, but can contain more elements than can fit into the main memory. The containers are compatible with STL algorithms, an example: #include <stxxl> // ten billion doubles stxxl::vector<double> HugeVector(10ULL * 1000000000ULL); std::fill(HugeVector.begin(), HugeVector.end(), 0.0); STL algorithms that rely on Output, Input, Forward and Bidirectional iterators will work I/O efficiently with Stxxl containers. For the RandomAccessIterator algorithms (sortting) I have implemented specialized I/O efficient implementations: // ten billion doubles stxxl::vector<double> HugeVector(10ULL * 1000000000ULL); std::generate(HugeVector.begin(), HugeVector.end(), MyRandom()); // sort the vector using only 512 MB of main memory stxxl::sort(HugeVector.begin(), HugeVector.end(), 128*1024*1024); or another example (sort a file): stxxl::file myfile("../myfile.dat",stxxl::file::RDWR); stxxl::vector<double> HugeVector(&myfile); // sort the vector using only 512 MB of main memory stxxl::sort(HugeVector.begin(), HugeVector.end(), 128*1024*1024); More details about the Stxxl library: http://i10www.ira.uka.de/dementiev/stxxl.shtml Would such a library be interesting for Boost users? Does it fit here? Is it worth to boostify it? I would be very glad to know your opinion. With best regards, Roman